rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 0-....: (6 ticks this GP) idle=721/1/0x4000000000000002 softirq=34382/34382 fqs=2101
(detected by 1, t=10503 jiffies, g=46885, q=369)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 11388 Comm: syz.6.1939 Not tainted 5.15.186-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:lockdep_hardirqs_on_prepare+0xe9/0x760 kernel/locking/lockdep.c:4259
Code: e8 03 0f b6 04 10 84 c0 0f 85 0b 05 00 00 83 3d 2c 5d b0 14 00 75 6c 48 c7 44 24 40 00 00 00 00 9c 8f 44 24 40 f6 44 24 41 02 <0f> 85 87 03 00 00 48 c7 c0 60 0f 0c 96 48 c1 e8 03 0f b6 04 10 84
RSP: 0018:ffffc90000007980 EFLAGS: 00000046
RAX: 0000000000000004 RBX: 1ffff92000000f34 RCX: ffffffff960c0f03
RDX: dffffc0000000000 RSI: 0000000000000000 RDI: 0000000000000002
RBP: ffffc90000007a38 R08: dffffc0000000000 R09: ffffed101720765a
R10: ffffed101720765a R11: 1ffff11017207659 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FS: 00007f771fd8d6c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2e418ff8 CR3: 0000000060910000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
<IRQ>
trace_hardirqs_on+0x67/0x80 kernel/trace/trace_preemptirq.c:49
asm_sysvec_irq_work+0x16/0x20 arch/x86/include/asm/idtentry.h:713
RIP: 0010:rcu_read_unlock_special+0x84/0x480 kernel/rcu/tree_plugin.h:671
Code: f1 f1 f1 00 f2 f2 f2 4a 89 04 2b 66 42 c7 44 2b 09 f3 f3 42 c6 44 2b 0b f3 65 44 8b 35 8d 26 9e 7e 41 f7 c6 00 00 f0 00 74 45 <48> c7 44 24 20 0e 36 e0 45 4a c7 04 2b 00 00 00 00 66 42 c7 44 2b
RSP: 0018:ffffc90000007b00 EFLAGS: 00000206
RAX: 8173bffa427fc500 RBX: 1ffff92000000f64 RCX: 8173bffa427fc500
RDX: dffffc0000000000 RSI: ffffffff8a0b11c0 RDI: ffffffff8a59ab80
RBP: ffffc90000007be0 R08: dffffc0000000000 R09: fffffbfff1ff7437
R10: fffffbfff1ff7437 R11: 1ffffffff1ff7436 R12: ffffffff8c120400
R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000001
__rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:422
rcu_read_unlock include/linux/rcupdate.h:771 [inline]
ieee80211_rx_napi+0x1f4/0x360 net/mac80211/rx.c:5006
ieee80211_rx include/net/mac80211.h:4571 [inline]
ieee80211_handle_queued_frames+0x105/0x1b0 net/mac80211/main.c:237
tasklet_action_common+0x298/0x400 kernel/softirq.c:806
handle_softirqs+0x328/0x820 kernel/softirq.c:576
__do_softirq kernel/softirq.c:610 [inline]
invoke_softirq kernel/softirq.c:450 [inline]
__irq_exit_rcu+0x12f/0x220 kernel/softirq.c:659
irq_exit_rcu+0x5/0x20 kernel/softirq.c:671
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1108
</IRQ>
<TASK>
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:preempt_schedule_irq+0xac/0x150 kernel/sched/core.c:6780
Code: 44 24 20 f6 44 24 21 02 74 0b 0f 0b 48 f7 03 08 00 00 00 74 70 bf 01 00 00 00 e8 7f 96 9f f7 e8 0a 19 cc f7 fb bf 01 00 00 00 <e8> cf b5 ff ff 48 c7 44 24 40 00 00 00 00 9c 8f 44 24 40 8b 44 24
RSP: 0018:ffffc900031ee9a0 EFLAGS: 00000286
RAX: 8173bffa427fc500 RBX: 0000000000000000 RCX: 8173bffa427fc500
RDX: dffffc0000000000 RSI: ffffffff8a0b11c0 RDI: 0000000000000001
RBP: ffffc900031eea40 R08: dffffc0000000000 R09: fffffbfff1ff7437
R10: fffffbfff1ff7437 R11: 1ffffffff1ff7436 R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff9200063dd34
irqentry_exit+0x63/0x70 kernel/entry/common.c:432
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:lock_acquire+0x1f2/0x3f0 kernel/locking/lockdep.c:5627
Code: 00 9c 8f 84 24 80 00 00 00 f6 84 24 81 00 00 00 02 0f 85 f6 00 00 00 41 f7 c6 00 02 00 00 74 01 fb 48 c7 44 24 60 0e 36 e0 45 <4b> c7 44 3d 00 00 00 00 00 66 43 c7 44 3d 09 00 00 43 c6 44 3d 0b
RSP: 0018:ffffc900031eeb00 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 0000000000000000 RCX: 8173bffa427fc500
RDX: 0000000000000000 RSI: ffffffff8a0b2460 RDI: ffffffff8a59ab80
RBP: ffffc900031eec08 R08: dffffc0000000000 R09: fffffbfff1ff7437
R10: fffffbfff1ff7437 R11: 1ffffffff1ff7436 R12: ffff88807ae35748
R13: 1ffff9200063dd6c R14: 0000000000000246 R15: dffffc0000000000
kernfs_drain fs/kernfs/dir.c:478 [inline]
__kernfs_remove+0x5de/0xc50 fs/kernfs/dir.c:1372
kernfs_remove_by_name_ns+0x91/0x100 fs/kernfs/dir.c:1566
kernfs_remove_by_name include/linux/kernfs.h:598 [inline]
remove_files fs/sysfs/group.c:28 [inline]
sysfs_remove_group+0xf8/0x290 fs/sysfs/group.c:289
sysfs_remove_groups+0x50/0xa0 fs/sysfs/group.c:313
__kobject_del+0x84/0x2f0 lib/kobject.c:619
kobject_cleanup lib/kobject.c:704 [inline]
kobject_release lib/kobject.c:744 [inline]
kref_put include/linux/kref.h:65 [inline]
kobject_put+0x235/0x460 lib/kobject.c:761
net_rx_queue_update_kobjects+0x420/0x490 net/core/net-sysfs.c:1124
remove_queue_kobjects net/core/net-sysfs.c:1822 [inline]
netdev_unregister_kobject+0x111/0x250 net/core/net-sysfs.c:1976
unregister_netdevice_many+0x141e/0x18f0 net/core/dev.c:11161
rtnl_delete_link net/core/rtnetlink.c:3112 [inline]
rtnl_dellink+0x3db/0x700 net/core/rtnetlink.c:3163
rtnetlink_rcv_msg+0x9b9/0xe60 net/core/rtnetlink.c:5650
netlink_rcv_skb+0x1e0/0x430 net/netlink/af_netlink.c:2489
netlink_unicast_kernel net/netlink/af_netlink.c:1311 [inline]
netlink_unicast+0x77c/0x920 net/netlink/af_netlink.c:1337
netlink_sendmsg+0x8ab/0xbc0 net/netlink/af_netlink.c:1905
sock_sendmsg_nosec net/socket.c:704 [inline]
__sock_sendmsg net/socket.c:716 [inline]
____sys_sendmsg+0x5a2/0x8c0 net/socket.c:2436
___sys_sendmsg+0x1f0/0x260 net/socket.c:2490
__sys_sendmsg net/socket.c:2519 [inline]
__do_sys_sendmsg net/socket.c:2528 [inline]
__se_sys_sendmsg+0x190/0x250 net/socket.c:2526
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f7721f25929
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f771fd8d038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f772214cfa0 RCX: 00007f7721f25929
RDX: 0000000000000000 RSI: 0000200000000000 RDI: 0000000000000004
RBP: 00007f7721fa7b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f772214cfa0 R15: 00007fff4a0f6708
</TASK>